package com.nan.mybatisplus.config;

import com.baomidou.mybatisplus.core.injector.ISqlInjector;
import com.baomidou.mybatisplus.extension.injector.LogicSqlInjector;
import com.baomidou.mybatisplus.extension.plugins.OptimisticLockerInterceptor;
import com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor;
import com.baomidou.mybatisplus.extension.plugins.pagination.optimize.JsqlParserCountOptimize;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.transaction.annotation.EnableTransactionManagement;

/**
 * @Title: mybatisplus
 * @escription: this is a MyatisPlusConfig Class
 * @Author: Mr.Nan
 * @Version: 1.0 2021-10-11 10:53
 **/
@MapperScan("com.nan.mybatisplus.mapper")
@EnableTransactionManagement
@Configuration
public class MyatisPlusConfig {

    //注册乐观锁
    @Bean
    public OptimisticLockerInterceptor optimisticLockerInterceptor(){
       return new  OptimisticLockerInterceptor();
    }

    //分页插件
    @Bean
    public PaginationInterceptor paginationInterceptor() {
//        PaginationInterceptor paginationInterceptor = new PaginationInterceptor();
        // 设置请求的页面大于最大页后操作， true调回到首页，false 继续请求  默认false
        // paginationInterceptor.setOverflow(false);
        // 设置最大单页限制数量，默认 500 条，-1 不受限制
        // paginationInterceptor.setLimit(500);
        // 开启 count 的 join 优化,只针对部分 left join
//        paginationInterceptor.setCountSqlParser(new JsqlParserCountOptimize(true));
        return new PaginationInterceptor();
    }

    //逻辑删除注入
    @Bean
    public ISqlInjector sqlInjector(){
        return new LogicSqlInjector();
    }
}
